Lewis beown



UNITED STATES PATENT O FI E.

LEWIS BROVN, OF LANDING, NE\V JERSEY, ASSIGNOR TO THE AMERICAN FORCITE POlVDER MANUFACTURING COMPANY, OF NEW YORK, N. Y.

NlTRO-GLYCERINE BLASTING-POWDER.

SPECIFICATION forming part of Letters Patent No. 478,844, dated July .12, 1892.

Application filed September 5, 1891. Serial No. 404,886. (No specimens.)

To all whom it may concern:

Be it known that I, LEWIS BROWN, of Landing, in the county of Morris and State of New Jersey, have invented a new and-useful 1m- 5 provement in Mixtures for use in the Manufacture of Nitro-Glycerine Blasting-Powder, of which the following is a specification.

My invention relates to an improvement in mixtures for use in the manufacture of nitrorc glycerine blasting-powder for the purpose of grading the quickness and energy of its'explosive force and protecting it from deterioration under the influence of the weather.

The auxiliary mixture used for the purpose r 5 of absorbing the nitro-glyoerine and preparing it to receive the grading and coating mixture forms the subject-matter of a separate application filed of even date herewith, Serial No. 404,885, the present application embrac- 1 :0 ing only the grading and coating mixture.

- phur.

affine liquid, it possessesthe properties required for grading the energy andquickness of the explosion. The wood pulp serves as a pore-maker, enabling the rosin and parafline to come into more perfect contact with the entire mass of the nitrate of soda and sul- The rosin serves as a binder and the parafii ne forms a water-proof coating, preven ting deterioration of the mixture while awaiting use. In practice a portion of this mixture, depending upon the grade of energy or quickness required, is incorporated with the mixture which holds the n'itro-glycerineabsorbed therein, to completethe powder for the market and for use.

While the above-stated proportions are at present preferred, variations therefrom may be made with more or less successful results. I do not, therefore, wish to limit myself to the exact proportions named; bu

hat I claim is--.-- i

The grading and coating mixture comprising nitrate of soda, wood pulp, sulphur, rosin, and paraffine, combined in the proportions substantially as set forth.

LEWIS BROWN.

Witnesses:

FREDK. HAYNES, GEORGE BARRY. 

